public void ServiceInstanceCanBeResolved()
{
// Arrange
var collection = new ServiceCollection();
var instance = new FakeService();
collection.AddSingleton(typeof(IFakeServiceInstance), instance);
var provider = CreateServiceProvider(collection);
// Act
var service = provider.GetService<IFakeServiceInstance>();
// Assert
Assert.Same(instance, service);
}
public void OuterServiceCanHaveOtherServicesInjected()
{
// Arrange
var collection = new ServiceCollection();
var fakeService = new FakeService();
collection.AddTransient<IFakeOuterService, FakeOuterService>();
collection.AddSingleton<IFakeService>(x => fakeService);
collection.AddTransient<IFakeMultipleService, FakeOneMultipleService>();
collection.AddTransient<IFakeMultipleService, FakeTwoMultipleService>();
var provider = CreateServiceProvider(collection);
// Act
var services = provider.GetService<IFakeOuterService>();
// Assert
Assert.Same(fakeService, services.SingleService);
Assert.Collection(services.MultipleServices.OrderBy(s => s.GetType().FullName),
service => Assert.IsType<FakeOneMultipleService>(service),
service => Assert.IsType<FakeTwoMultipleService>(service));
}